A dreaded curse that has nagged Chicago's Wrigley Field for decades may have triggered a grotesque prank Wednesday, when an unidentified man in an unmarked truck dropped off a package containing a severed goat's head at the stadium.

On Wednesday, the U.S. Postal Service said it will delay its plan to eliminate Saturday mail delivery, saying "restrictive language" in Congress' temporary government funding resolution prohibits the new schedule.

The 20-year-old student who authorities said went on a stabbing spree Tuesday at Lone Star College near Houston, Texas, is undergoing psychological evaluation Wednesday, the Harris County District Attorney's Office says.

NEW YORK (CNNMoney) -- President Obama on Wednesday will propose a $3.77 trillion budget for 2014 that would cut deficits by $1.8 trillion over the next decade, according to senior administration officials.